Results 21 to 30 of about 203,873 (264)

Progress in numerical simulation of casting process

open access: yesMeasurement + Control, 2022
The numerical simulation of casting process can calculate casting filling process, solidification process, and obtain change and coupling information of temperature field, velocity field, pressure field, stress field and microstructure.
Zhengyang Chen   +4 more
doaj   +1 more source

Simulation Study on the Effect of Cement Shrinkage on the Stress Distribution of Large Tonnage Disc-Type Suspension Porcelain Insulators

open access: yesEnergies
With the development of UHV transmission technology, large-tonnage disc-type suspension porcelain insulators have been widely used. Insulators with cylindrical heads have the advantages of light weight and high strength compared with traditional ...
Jianli Zhao   +5 more
doaj   +1 more source

Enhanced discrete phase model for multiphase flow simulation of blood flow with high shear stress

open access: yesScience Progress, 2021
Shear stress is often present in the blood flow within blood-contacting devices, which is the leading cause of hemolysis. However, the simulation method for blood flow with shear stress is still not perfect, especially the multiphase flow model and ...
Zheqin Yu, Jianping Tan, Shuai Wang
doaj   +1 more source

Simulation and Experiment Research on the Surface Deformation and Residual Stress of Fractal Rough Surface Single-Shot Peening

open access: yesApplied Sciences, 2022
In order to study the influence of workpiece surface topography on deformation and residual stress during shot peening, the paper built a rough surface single-shot peening simulation model and designed a rough surface workpieces shot peening experiment ...
Shengfang Zhang   +5 more
doaj   +1 more source

Research on Experimental Validation and Prevention Strategies for Pin Shaft Failure in Concrete Pump Trucks

open access: yesSensors
This study focuses on the pin shaft failure accidents occurring during the construction of concrete pump trucks and hypothesizes that the accidents are caused by improper installation of the pin shaft mounting angle (defined as the angle between the oil ...
Wuhe Sun   +4 more
doaj   +1 more source

An unexpected alternative viologen electron mediator site in tungsten‐containing formate dehydrogenase

open access: yesFEBS Letters, EarlyView.
An unexpected alternative interaction site for ethyl viologen was identified in formate dehydrogenase 1 from Methylorubrum extorquens. Combined mutagenesis, kinetic analysis, and docking revealed that aromatic residues near an iron–sulfur cluster enable flavin mononucleotide‐independent electron transfer, offering a framework for engineering improved ...
Eleni G. Poloniataki, Yong Hwan Kim
wiley   +1 more source

Using finite difference method to simulate casting thermal stress [PDF]

open access: yesChina Foundry, 2011
Thermal stress simulation can provide a scientific reference to eliminate defects such as crack, residual stress centralization and deformation etc., caused by thermal stress during casting solidification.
Liao Dunming, Zhang Bin, Zhou Jianxin
doaj  

Cell geometry and membrane protein crowding constrain Escherichia coli growth rate, overflow metabolism, respiration, and maintenance energy

open access: yesFEBS Letters, EarlyView.
The physical dimensions and shape of bacterial cells define the surface area available to acquire nutrients and the volume available for synthesizing proteins and DNA. Here, we use computational systems biology to decode the importance of cell geometry as a major determinant of prokaryotic phenotype, including growth rate and metabolic efficiency. This
Ross P. Carlson   +6 more
wiley   +1 more source

Virtual Therapy Planning of Aortic Valve Replacement for Preventing Patient-Prosthesis Mismatch

open access: yesBioengineering
Background: Recent studies suggest that any degree of patient-prosthesis mismatch (PPM) increases morbidity and mortality after surgical aortic valve replacement (SAVR). We used computational fluid dynamics simulations to test the influence of prosthesis
Marie Schafstedde   +6 more
doaj   +1 more source

Exact simulation of extrinsic stress-release processes

open access: yesJournal of Applied Probability, 2022
AbstractWe present a new and straightforward algorithm that simulates exact sample paths for a generalized stress-release process. The computation of the exact law of the joint inter-arrival times is detailed and used to derive this algorithm. Furthermore, the martingale generator of the process is derived, and induces theoretical moments which ...
Young Lee 0003   +4 more
openaire   +4 more sources

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